diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 2d22932..0503b2e 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -46,6 +46,8 @@
 	KOBJ_UMOUNT	= (__force kobject_action_t) 0x05,	/* umount event for block devices (broken) */
 	KOBJ_OFFLINE	= (__force kobject_action_t) 0x06,	/* device offline */
 	KOBJ_ONLINE	= (__force kobject_action_t) 0x07,	/* device online */
+	KOBJ_UNDOCK	= (__force kobject_action_t) 0x08, 	/* undocking */
+	KOBJ_DOCK	= (__force kobject_action_t) 0x09,	/* dock */
 };
 
 struct kobject {
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 7f20e7b..2b1530f 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -50,6 +50,10 @@
 		return "offline";
 	case KOBJ_ONLINE:
 		return "online";
+	case KOBJ_DOCK:
+		return "dock";
+	case KOBJ_UNDOCK:
+		return "undock";
 	default:
 		return NULL;
 	}